Fender for boats

Abstract

A fender for boats consisting of a base made of plastic material, able to be fixed to a hull of a boat, and an insert able to be coupled by a lock joint to said base. The insert is composed of a profile made of metal material and a core made of plastic material and is removably coupled by the lock joint to the base.

The invention claimed is: 
     
       1. A fender for boats contains a base made of plastic material to be fixed to a hull of a boat, an insert to be coupled to the base, the insert composed of a profile made of metal and a core made of plastic material, wherein said insert is removably coupled by a lock joint to the base,
 wherein the profile is formed by a curved stretch and two rectilinear stretches converging towards each other, the curved stretch is connected with continuity to each rectilinear stretch, 
 wherein the core comprises a head and connection means, and 
 wherein the profile encompasses the head of the core, and the connection means extend between ends of the rectilinear stretches towards connection means of the base to which the connection means of the core is able to be coupled by lock joint. 
 
     
     
       2. The fender according to  claim 1 , wherein the base comprises at least one connection protrusion able to be coupled by a lock joint to at least one connection protrusion of the insert. 
     
     
       3. The fender according to  claim 2 , wherein at least one connection protrusion of the insert is part of the core. 
     
     
       4. The fender according to  claim 3 , wherein the base and the insert are symmetrical with respect to an axis,
 the core of the insert comprises a head and a stem, which comprises two connection protrusions, which develop from the bottom of the stem, inclined with respect to the axis, and diverging from the axis in the direction of the head of the core. 
 
     
     
       5. The fender according to  claim 4 , wherein each protrusion of the insert comprises two straight stretches, parallel to each other, connected by a further straight stretch, able to interact with the respective protrusion of the base. 
     
     
       6. The fender according to  claim 5 , wherein each connection protrusion of the base comprises a curve below which a respective straight stretch engages. 
     
     
       7. The fender according to  claim 6 , wherein the
 curve continues at the bottom in inclined stretches joined to one another by a rectilinear portion forming a cavity in the base, 
 a first of the straight stretches of each connection protrusion of the insert is connected to a straight stretch of the stem, defining an acute angle, a second of the straight stretches of each connection protrusion of the insert is connected to a straight base of the stem, 
 the shape defined by the straight base and by the straight stretches, external with respect to the axis, is able to rest in a substantially complementary manner in the cavity of the base, the straight base coupled to the rectilinear portion of the base and each external straight stretch resting on a respective inclined stretch. 
 
     
     
       8. The fender according to  claim 7 , wherein
 the profile is formed by a curved stretch and two rectilinear stretches converging towards the same axis, the curved stretch is connected with continuity to each rectilinear stretch by connections, 
 the core has a curved edge, which follows the curved stretch of the profile with contact, 
 a space is provided, at each rectilinear stretch of the profile, between the rectilinear stretch and the core, interrupted by a rest protrusion beyond which the core continues until the upper end of the stem. 
 
     
     
       9. The fender according to  claim 8 , wherein the core continues with a rectilinear stretch beyond the protrusion, connecting at 90° to a straight stretch of the stem, parallel to the axis before the protrusion, from the stem, a further straight stretch on the same directrix as the stretch, orthogonal to the axis, the continuity of the straight stretches being interrupted by the protrusion. 
     
     
       10. The fender according to  claim 8 , wherein each curve continues laterally along a straight stretch up to a lateral wing, determining a step, upon completion of coupling the rectilinear stretches resting on the straight stretches and the connections resting on the steps. 
     
     
       11. The fender according to  claim 1 , wherein the core comprises a central cavity. 
     
     
       12. The fender according to  claim 1 , wherein the base comprises closed lateral cavities with a circular section. 
     
     
       13. The fender according to  claim 3 , wherein
 the profile is formed by a curved stretch and two rectilinear stretches converging towards an axis of symmetry of the insert, the curved stretch being connected with continuity to each rectilinear stretch by connections, 
 the core has an edge, which follows the profile and covers it until ends of the rectilinear stretches of the profile, 
 the base is symmetrical with respect to the same axis of symmetry as the insert and comprises two connection protrusions, two closed lateral cavities, a central open cavity, and two lateral wings, each connection protrusion and the respective wing determining an open lateral cavity, 
 the core comprises two connection protrusions, which develop between the ends of the profile, 
 the connection protrusions of the insert coupled by a lock joint to respective connection protrusions of the base so as to close the central cavity of the base and allow the profile of the insert to rest on the wings of the base, closing the lateral cavities of the base. 
 
     
     
       14. The fender according to  claim 13 , wherein each lateral wing of the base is formed by one end of a curved lateral portion of the base and a curved stretch, which meet, forming a tip, the profile of the insert being able to slide on the curved stretch. 
     
     
       15. The fender according to  claim 14 , wherein each connection protrusion of the base comprises one end able to be coupled to a respective groove of a respective connection protrusion of the insert, and a tooth able to be coupled to a respective end of the profile of the insert. 
     
     
       16. The fender according to  claim 14 , wherein each protrusion of the insert comprises two rectilinear stretches, which meet in a connection. 
     
     
       17. The fender according to  claim 14 , wherein the protrusions of the insert comprise grooves facing one another. 
     
     
       18. The fender according to  claim 17 , wherein each protrusion of the insert comprises a pair of grooves, which defines a constriction. 
     
     
       19. The fender according to  claim 13 , wherein each closed lateral cavity of the base is delimited by two curved stretches facing each other and connected by two straight stretches.